<template>
  <el-table :data="formatData" :row-style="showRow" v-bind="$attrs" stripe>
    <!--<el-table-column v-if="columns.length===0" width="150">-->
    <!--<template slot-scope="scope">-->
    <!--<span v-for="space in scope.row._level" :key="space" class="ms-tree-space"/>-->
    <!--<span v-if="iconShow(0,scope.row)" class="tree-ctrl" @click="toggleExpanded(scope.$index)">-->
    <!--<i v-if="!scope.row._expanded" class="el-icon-caret-right"/>-->
    <!--<i v-else class="el-icon-caret-bottom"/>-->
    <!--</span>-->
    <!--{{ scope.$index }}-->
    <!--</template>-->
    <!--</el-table-column>-->

    <!--<el-table-column align="center" width="60">-->
    <!--<template slot-scope="scope">-->
    <!--<span v-for="space in scope.row._level" :key="space" class="ms-tree-space"/>-->
    <!--<span v-if="iconShow(0,scope.row)" class="tree-ctrl" @click="toggleExpanded(scope.$index)">-->
    <!--<i v-if="!scope.row._expanded" class="el-icon-caret-right" style="font-size: 20px"/>-->
    <!--<i v-else class="el-icon-caret-bottom" style="font-size: 20px"/>-->
    <!--</span>-->
    <!--</template>-->
    <!--</el-table-column>-->
    <el-table-column v-for="(column, index) in columns" :key="column.value" :label="column.text" :width="column.width">
      <template slot-scope="scope">
        <!-- Todo -->
        <!-- eslint-disable-next-line vue/no-confusing-v-for-v-if -->

        <!--<span v-for="space in scope.row._level" v-if="index === 0" :key="space" class="ms-tree-space"/>-->
        <!--<span v-if="iconShow(index,scope.row)" class="tree-ctrl" @click="toggleExpanded(scope.$index)" style="background-color: green">-->
        <!--<i v-if="!scope.row._expanded" class="el-icon-caret-right"/>-->
        <!--<i v-else class="el-icon-caret-bottom"/>-->
        <!--</span>-->
        <!--{{ scope.row[column.value] }}-->
        <span v-if="index === 0" @click="toggleExpanded(scope.$index)">
          <p :style="`margin-left: ${scope.row._level * 20}px;margin-top:0;margin-bottom:0`">
            <span v-if="iconShow(index,scope.row)" class="tree-ctrl">
              <i v-if="!scope.row._expanded" class="el-icon-caret-right" style="color: #606266;font-size: 18px" />
              <i v-else class="el-icon-caret-bottom" style="color: #606266;font-size: 18px" />
              <svg-icon v-if="!scope.row._expanded" icon-class="my-folder-close" style="color: #606266;font-size: 18px" />
              <svg-icon v-else icon-class="my-folder-open" style="color: #606266;font-size: 18px" />
            </span>
            <span v-else>
              <svg-icon icon-class="my-file" style="color: #606266;font-size: 18px" />
            </span>
            {{ scope.row[column.value] }}
          </p>
        </span>
        <span v-else>
          {{ scope.row[column.value] }}
        </span>
      </template>
    </el-table-column>
    <slot />
  </el-table>
</template>

<style>
  .el-table .warning-row {
    background: #EBEEF5;
  }

  .el-table .success-row {
  }
</style>

<script>
/**
   Auth: Lei.j1ang
   Created: 2018/1/19-13:59
   */
import treeToArray from './eval'
export default {
  name: 'TreeTable',
  props: {
    /* eslint-disable */
      data: {
        type: [Array, Object],
        required: true
      },
      columns: {
        type: Array,
        default: () => []
      },
      evalFunc: Function,
      evalArgs: Array,
      expandAll: {
        type: Boolean,
        default: false
      }
    },
    computed: {
      // 格式化数据源
      formatData: function() {
        let tmp
        if (!Array.isArray(this.data)) {
          tmp = [this.data]
        } else {
          tmp = this.data
        }
        const func = this.evalFunc || treeToArray
        const args = this.evalArgs ? Array.concat([tmp, this.expandAll], this.evalArgs) : [tmp, this.expandAll]
        return func.apply(null, args)
      }
    },
    methods: {
      showRow: function(row) {
        const show = (row.row.parent ? (row.row.parent._expanded && row.row.parent._show) : true)
        row.row._show = show
        return show ? 'animation:treeTableShow 1s;-webkit-animation:treeTableShow 1s;' : 'display:none;'
      },
      // 切换下级是否展开
      toggleExpanded: function(trIndex) {
        const record = this.formatData[trIndex]
        record._expanded = !record._expanded
      },
      // 图标显示
      iconShow(index, record) {
        return (index === 0 && record.children && record.children.length > 0)
      },
      tableRowClassName({row, rowIndex}) {
        if (row.menuLevel != "1") {
          return 'warning-row';
        }
        return '';
      }
    }
  }
</script>
<style rel="stylesheet/css">
  @keyframes treeTableShow {
    from {opacity: 0;}
    to {opacity: 1;}
  }
  @-webkit-keyframes treeTableShow {
    from {opacity: 0;}
    to {opacity: 1;}
  }
</style>

<style lang="scss" rel="stylesheet/scss" scoped>
  $color-blue: #2196F3;
  $space-width: 18px;
  .ms-tree-space {
    position: relative;
    top: 1px;
    display: inline-block;
    font-style: normal;
    font-weight: 400;
    line-height: 1;
    width: $space-width;
    height: 14px;
    &::before {
      content: ""
    }
  }
  .processContainer{
    width: 100%;
    height: 100%;
  }
  table td {
    line-height: 26px;
  }

  .tree-ctrl{
    position: relative;
    cursor: pointer;
    color: $color-blue;
    margin-left: -$space-width;
  }
</style>
